storage::Topology Class Reference

A class to calculate partition alignment based on hardware topology. More...

#include <Topology.h>

Public Member Functions
	Topology (long alignment_offset, unsigned long optimal_io_size)
	Topology (const Topology &topology)
Topology &	operator= (const Topology &topology)
long	get_alignment_offset () const
void	set_alignment_offset (long alignment_offset)
unsigned long	get_optimal_io_size () const
void	set_optimal_io_size (unsigned long optimal_io_size)
unsigned long	get_minimal_grain () const
void	set_minimal_grain (unsigned long minimal_grain)
unsigned long	calculate_grain () const
	Calculates the grain.
bool	can_be_aligned (const Region &region, AlignPolicy align_policy) const
	Checks whether a region can be aligned. More...
Region	align (const Region &region, AlignPolicy align_policy=AlignPolicy::ALIGN_END) const
	Aligns a region. More...
bool	operator== (const Topology &rhs) const
bool	operator!= (const Topology &rhs) const
Impl &	get_impl ()
const Impl &	get_impl () const

Friends
std::ostream &	operator<< (std::ostream &s, const Topology &topology)
bool	getChildValue (const xmlNode *node, const char *name, Topology &topology)
void	setChildValue (xmlNode *node, const char *name, const Topology &topology)

Detailed Description

A class to calculate partition alignment based on hardware topology.

The starting sector of a partition must obey the form "sector = offset + X * grain". Alignment may fail is the start of the aligned partition region is after the end of the aligned partition region.

Member Function Documentation

align()

Region storage::Topology::align	(	const Region &	region,
		AlignPolicy	align_policy = AlignPolicy::ALIGN_END
	)		const

Aligns a region.

Exceptions

AlignError

can_be_aligned()

bool storage::Topology::can_be_aligned	(	const Region &	region,
		AlignPolicy	align_policy
	)		const

Checks whether a region can be aligned.

Alignment may fail if the aligned end is before the aligned start.

---

The documentation for this class was generated from the following file:

• /home/abuild/rpmbuild/BUILD/libstorage-ng-3.0.0/storage/Utils/Topology.h